1 Lithium-ion replacement battery with safety guard solder connectors. Battery measures 21 x 12 x 4.8mm with a 3.7v and a max capacity of 85mah. This battery is a replacement battery and meant to be inserted in electronic devices such as headsets and headphones. This battery may not be used as an external operating battery. Certified tested and is a fully compatible replacement battery for the Beats by Dr. Dre Powerbeats 2 & 3 Wireless headphone headsets.Requires soldering and is recommended to be used by electronic repair technicians. Powerbeats 2 & 3 Replacement Battery has been manufactured by Affordable Co. interantional with a strict USA Quality supervision and ships from the USA only. Real 85mah with super duper quality guaranteed. Features 2 metal battery safety connectors for safe and easy soldering connection to be done.